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新手参考,大神勿进题意:m个人,n顿饭,给出m个人在n顿饭中的出席情况,求:有没有人出席了全部饭局。 思路:一个人如果没有出席某一饭局,其他就不用判断了,符合 & rt #include<iostream> #include<stdio.h> #include<math.h> #include<stdlib.h> #include<string> #include<string.h> #include<algorithm> #define N 101 using namespace std; int s[N]; int main() { int i,j,m,n,t; while(1) { scanf("%d%d",&m,&n); if(m+n == 0) break; memset(s,1,sizeof(s)); for(i=0;i<n;i++) { for(j=0;j<m;j++){ scanf("%d",&t); s[j]&=t; } } j=0; for(i=0;i<m;i++) if(s[i])j=1; if(j)printf("yes\n"); else printf("no\n"); } return 0; } Followed by: Post your reply here: |
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